22155243542 has 16 divisors (see below), whose sum is σ = 34164273312. Its totient is φ = 10767735360.

The previous prime is 22155243527. The next prime is 22155243563. The reversal of 22155243542 is 24534255122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68903 + ... + 221490.

It is an arithmetic number, because the mean of its divisors is an integer number (2135267082).

Almost surely, 2^22155243542 is an apocalyptic number.

22155243542 is a deficient number, since it is larger than the sum of its proper divisors (12009029770).

22155243542 is a wasteful number, since it uses less digits than its factorization.

22155243542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291463.

The product of its digits is 96000, while the sum is 35.

Adding to 22155243542 its reverse (24534255122), we get a palindrome (46689498664).

The spelling of 22155243542 in words is "twenty-two billion, one hundred fifty-five million, two hundred forty-three thousand, five hundred forty-two".